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After NFL legend Frank Gifford died Sunday at the age of 84, tributes and remembrances poured in on Twitter.

The New York Giants player and Hall of Famer, who also served as a sportscaster for Monday Night Football, died of natural causes at his home in Connecticut. His wife, Today co-host Kathie Lee Gifford, tweeted that she was “deeply grateful” for the “outpouring of grace.”

Many of her Today Show colleagues shared their condolences online, as did celebrities like Ellen DeGeneres, Kendall Jenner, and Donald Trump.